Package org.apache.druid.frame.allocation

Class MemoryRange<T extends org.apache.datasketches.memory.Memory>

java.lang.Object

org.apache.druid.frame.allocation.MemoryRange<T>

public class MemoryRange<T extends org.apache.datasketches.memory.Memory>
extends Object

Reference to a particular region of some Memory. This is used because it is cheaper to reuse this object rather than calling Memory.region(long, long) for each row. Not immutable. The pointed-to range may change as this object gets reused.

Constructor Summary

Constructors

Constructor	Description
MemoryRange(T memory, long start, long length)

Method Summary

Modifier and Type	Method	Description
long	length()
T	memory()	Returns the underlying memory *without* clipping it to this particular range.
void	set(T memory, long start, long length)
long	start()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MemoryRange

public MemoryRange(T memory,
                   long start,
                   long length)

Method Detail

memory

public T memory()

Returns the underlying memory *without* clipping it to this particular range. Callers must apply the offset given by start and capacity given by length.

start

public long start()

length

public long length()

set

public void set(T memory,
                long start,
                long length)